linux/drivers/crypto/ccp/sp-dev.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * AMD Secure Processor driver
 *
 * Copyright (C) 2017-2018 Advanced Micro Devices, Inc.
 *
 * Author: Tom Lendacky <[email protected]>
 * Author: Gary R Hook <[email protected]>
 * Author: Brijesh Singh <[email protected]>
 */

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/kthread.h>
#include <linux/sched.h>
#include <linux/interrupt.h>
#include <linux/spinlock.h>
#include <linux/spinlock_types.h>
#include <linux/types.h>
#include <linux/ccp.h>

#include "ccp-dev.h"
#include "sp-dev.h"

MODULE_AUTHOR(…) …;
MODULE_AUTHOR(…) …;
MODULE_LICENSE(…) …;
MODULE_VERSION(…) …;
MODULE_DESCRIPTION(…) …;

/* List of SPs, SP count, read-write access lock, and access functions
 *
 * Lock structure: get sp_unit_lock for reading whenever we need to
 * examine the SP list.
 */
static DEFINE_RWLOCK(sp_unit_lock);
static LIST_HEAD(sp_units);

/* Ever-increasing value to produce unique unit numbers */
static atomic_t sp_ordinal;

static void sp_add_device(struct sp_device *sp)
{ … }

static void sp_del_device(struct sp_device *sp)
{ … }

static irqreturn_t sp_irq_handler(int irq, void *data)
{ … }

int sp_request_ccp_irq(struct sp_device *sp, irq_handler_t handler,
		       const char *name, void *data)
{ … }

int sp_request_psp_irq(struct sp_device *sp, irq_handler_t handler,
		       const char *name, void *data)
{ … }

void sp_free_ccp_irq(struct sp_device *sp, void *data)
{ … }

void sp_free_psp_irq(struct sp_device *sp, void *data)
{ … }

/**
 * sp_alloc_struct - allocate and initialize the sp_device struct
 *
 * @dev: device struct of the SP
 */
struct sp_device *sp_alloc_struct(struct device *dev)
{ … }

int sp_init(struct sp_device *sp)
{ … }

void sp_destroy(struct sp_device *sp)
{ … }

int sp_suspend(struct sp_device *sp)
{ … }

int sp_resume(struct sp_device *sp)
{ … }

struct sp_device *sp_get_psp_master_device(void)
{ … }

static int __init sp_mod_init(void)
{ … }

static void __exit sp_mod_exit(void)
{ … }

module_init(…) …;
module_exit(sp_mod_exit);